package api;

import cn.hutool.json.JSONUtil;
import model.UserInfo;
import util.AppVar;
import util.ResultUtil;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

/**
 * 得到当前用户的个人信息
 */
@WebServlet("/loginUserInfo")
public class LoginUserInfoServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
       UserInfo userInfo=null;
       String msg="未知错误";
        //1.得到session对象
     HttpSession session=req.getSession(false);
        //2.从当前session对象中获取当前登录的用户
    if(session!=null&&session.getAttribute(AppVar.SESSION_USERINFO_KEY)!=null){
      //当前用户已登录
   userInfo=(UserInfo) session.getAttribute(AppVar.SESSION_USERINFO_KEY);
    userInfo.setPassword("");//去除掉返回信息中的密码数据
    }else{
        msg="未登录";
    }
        //3.将用户返回给前端
        resp.setContentType(AppVar.RESPONSE_CONTENTTYPE_JSON);
    resp.getWriter().println(JSONUtil.toJsonStr(ResultUtil.toResult(
            200,userInfo,msg)));

    }
}
